This code is working fine , but I need to add something in timeout function before return in firstFunction()
function LastFunction(){
var answer = firstFunction();
console.log(answer)
}
function firstFunction() {
//Do something;
return somevalue
}
How to add timeout function inside function before return value ?
function firstFunction() {
setTimeout (function(){
var something = "something here"
},1000)
return something
}
You'll need to use Promises. Your code inside the setTimeout will be delayed but everything outside of it will continue to run synchronously.
function LastFunction(){
firstFunction().then(function(val) {
console.log(val)
return val
})
}
function firstFunction() {
var promise = new Promise(function(resolve, reject) {
setTimeout(function(){
var something = "something here"
resolve(something)
},1000)
})
return promise
}
asynchronous. Javascript is synchronous but when you call setTimeout you're scheduling the function you pass in to be called a later time. To get the value, you can use promises which are also asynchronous to wait for the promise to resolve. Then by use .then you can access that value.
Promise. What you're asking for does not exist.